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Measurement of time-dependent CP asymmetries and constraints on sin(2 beta+gamma) with partial reconstruction of B-0 -> D-*-/+pi(+/-) decays

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Gaillard, JM; Hicheur, A; Karyotakis, Y; ... BABAR Collaboration; + view all (2004) Measurement of time-dependent CP asymmetries and constraints on sin(2 beta+gamma) with partial reconstruction of B-0 -> D-*-/+pi(+/-) decays. PHYS REV LETT , 92 (25) , Article 251802. 10.1103/PhysRevLett.92.251802. Green open access

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Abstract

We present a measurement of time-dependent CP-violating asymmetries in decays of neutral B mesons to the final states D(*-/+)pi(+/-), using approximately 82x10(6) B (B) over bar events recorded by the BABAR experiment at the PEP-II e(+)e(-) storage ring. Events containing these decays are selected with a partial reconstruction technique, in which only the high-momentum pi(+/-) from the B decay and the low-momentum pi(-/+) from the D*-/+ decay are used. We measure the amplitude of the asymmetry to be -0.063+/-0.024(stat)+/-0.014(syst) and compute bounds on \sin(2beta+gamma)\.

Type: Article
Title: Measurement of time-dependent CP asymmetries and constraints on sin(2 beta+gamma) with partial reconstruction of B-0 -> D-*-/+pi(+/-) decays
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.92.251802
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.92.251802
Language: English
Additional information: The American Physical Society
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1303664
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